Secondary or storage battery.



E. W. SMITH. SECONDARY OR STORAGE BATTERY.

APPLICATION FILED JULY 21, 1910.

1,054,801 Patented Mar. 4, 1913.

/ wrmRA H- I i provement inthat type of plate or electrode- -which comprises a frame having rods upon sive and efiicient means for insulating such- UNITED STATES PATENT OF ICE.

nDWAnnwANroN sMrrH, or PHILADELrHIA, PENNSYLVANIA,

' SECONDARY on s'ronaen BATTERY.

which are arrangedtubular perforated envelops or covers containing active material or material to become active.

The principal object ofthe'present invention is to provide comparatively inexpenplates from their'neighbors when assembled in a. storage battery.

' ,Other objectsof. he invention will appear from the following, description which will be made in connection with the embodiment but not the only embodiment, of it chosen for illu'strationjn the accompanying drawings in which Figure 1, is a side view with parts broken away illustrating a plate or electrode embodying the invention. Fig. 2, is a top viewwith parts broken awayof a portion of the plate shown in Fig. 1. Fig. 3, is a side view of an envelop or cover embodying features' of the invention, and Figs. 4 and 5, are respectively sectional views of the "envelop or cover'embodying a modification of the lnvention.

' In the drawin s, 1 is a tubular envelop or cover provide with insulatingjmperforate ribs 2, that project from the surface thereof and with. perforated portions 3.

,The ribs 2, are ofinsulating material and the tube or envelop may be 'made of hard 'Bopiesot-thls patent may be obtained for five cents each, by addressing the fiommissioii er c nfate v 'fl v Specification of Letters en. Application filed July 21, 1910. Serial No. 572,996.

Patented Mar. 4, 1913.

rubber but the invention is not limited.- to that material. The perforations ofthe ortions 3, may be of any desired kind an by showing them in the form of slots 1 donot intend to exclude the use of other forms.

S1ots have certain advantages and where they are used the ribs 2, may extend from the interior surface of the tube. as in-Fig. 4, or from a point somewhat outsideof the interior surface'of the tube.

4 and 5, are grid sections connected, by

rodsfi, upon which the tubes or envelops are mounted. The space between the-inner surface of the tubes or envelops-and the rods is filled with active material or mate:

rial tobecome active 7. The grid sections lie insifleof the faces of the ribs so that the insulating ribs 2, project beyond the faces of the plate-and serve to insulate it from its neighbor when mounted in abatte'ry.

" I do not claim herein the described tubular end element since .the' latter forms the subject matter of my application, 'Serial No.

637,249, filed July 7th,.191 1.

What I claim is: i A secondary prising a section provided with a Inrality, of parallel rods,jactive materia or material to become active surrounding the rods, and permeable, tubulanenvelops or *covers of cylindrical bore, one surrounding .each rod, and inclosing the active material and provided with solid insulated ribs stantially as described.

or storage battery plate com- '75 which extend beyond the section, sub- In testimony whereof I have hereunto signed my name.

EDW'ARD wAN oN'sm'rri.

' Witnesses:

C F R EDGAR-LO GAKER;

Washington, D. C." 

